/Engine/Source/Runtime/Engine/Classes/Engine/DamageEvents.h
Simple API for common cases where we are happy to assume a single hit is expected, even though damage event may have multiple hits.
virtual void GetBestHitInfo ( [AActor](API\Runtime\Engine\GameFramework\AActor) const * HitActor, [AActor](API\Runtime\Engine\GameFramework\AActor) const * HitInstigator, [FHitResult](API\Runtime\Engine\Engine\FHitResult) & OutHitInfo, FVector & OutImpulseDir ) const